Improvement in machines for cutting locks in hoops



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AMOS GUTTER, OF BOSTON, MASSACHUSETTS.

Letters Pata No. 108,114, dalla october 11, 1870.

IMPROVEMENT IN MACHINES FIOR CUTTING LOCKS IN HQQPS.

The Schedule refrredto in these Letters Patent and making part of the same.

` I, AMOS CUTTER, of Boston, in the county of Suffolk, in the State of Massachusetts, have invented certain Improvements in Machines for Cutting the Locks in Barrel-Hoops, of which the following is a specification. if

My invention consists in the construction of a Inachine, in which the locks are simultaneously cut at both ends of the hoop.

It also consists in the arrangement of the opera-ting devices, that hoops of different sizes and lengths can be clamped, and locks out therein.

In the drawing- A represents the supporting-frame.

lB and B', the head-blocks that contain the revolving cutter-heads, that cut the locks in the hoop,l in each of which are inclined curved slots, and in these curved slots the frame of the cutter-heads freely slides.

C and C' are the adjustable tables, upon which the hoop is placed and clamped, while the looks are out therein.

D and D' are the revolving shafts, upon which are the cutter-heads that cut the locks, and are revolved by pulleys d.

aanda are the sliding frames that contain the shafts I) and D and cutter-heads, and are constructed to slide in the inclined curved slots a and fin the headblocks, and are regulated by the temper-screws z.

e and e' are the revolving saws, that cut the shoulder ofthe locks, and

fand j" are the revolving inclined-edged cutters; that cut ont the look aft-er the shoulder is sawed.

E is a long bent lever, placed longitudinally with the machine, pivoted at a; to a lug on franieA, and so bent as that one end comes above the frame A, and the other end extends along on the underside of said iranie A.

To the end oflever E, that is, above the frame, is a connecting-link, It, which connects the lever with the top ci' the frame a in head-stock B, and to that end of thelever that is below or underneath the frame, there is a sliding link that connects the lever to under side of frame a.

F is a foottreadle, hinged at y' to bracket G, that isfast to frame A, and drops down to the proper distance below the frame. At point the treadle F is connected to lever E by link la.

q y and y g'are springs that are attached to frames a., and operate to restore the frames a and a to their normal condition, when the foot-treadle is released.

I and I are foot or handlevers that act upon pivoted levers 2 and 2', which levers are connected to bent clamps 5 and 5 by links et and 4.

Head-block B is adjusted laterally, and so as to have it in line by means of set-screw and slot b, and table O is also adj usted toward or from the cutters by means of set-screws in slots c.

Head-block B is adjusted longitudinally, to give the proper length of hoop upon ways t' i on frame A, and is held inrplace by holding-screw m.

Table C' is adj usted longitudinally on way c' on frame A, and laterally by the slides c c" in table C, and table O and slides c" cA are held in place byv setscrews, as seen in lig. 2.

In order to allow of head-block B' toA be adjusted longitudinally, and not interfere with the hoop-clamping device, a slot, 3, is madelongitudinally in 1ever2, so that the link connection 4' can freely slidein said slots, and be no hindrance to the adjustment of headbl'ock B', and the link that connects frame a in headblock B' slides freely on lever E.

Operation.

The head-blocks and cntterheads are first adj usted to "the length at which theloeks'are to be out apart; then the tables adjusted at the proper distance from the cutters. A hoop is then placed on tables, one end resting against the raised part of frarneA, at the end of table C, when the hand is placed upon treadle-levers I and I', which causes the bent clamps 5 and 5 to firmly clamp the hoop upon the tables and againstthe back rests thereof, the cutter-heads in frames a and ct being in motion by a belt passing around pulleys d on shafts D and D. The foot ofthe operatoris placed upon treadle F and lpressed down, which acts to raise the frame a, with its cutter-head and cutters e and f 'in the curved slots of the head-block B, and, at the same time, depresses the frame a and cutters e and f' in head-block B", which brings the revolving 4cutters against the hoop on the tables in such manner that the locks are cleanly cut out at both ends of the hoop, and in such form as to exactly lit, when bent and brought together in the forni of' a hoop.

The operator-s foot is released from treadle F, when the retractingsprings g y and g' g' operate to carryor force the cutter-heads out ofthe way. When the levers I and I' are released, springs G and 6' force the bent clamps from the `finished hoop, when the hoop can be removed, and another to be acted upon putin as before. y

This machine will out the locks upon blank hoops as fast as they can he pnt in and taken out ofthe machine, as it is but an instant of time in doing its work. It is compact, requiring but little room, is easily operated and effective, doing the work of many handinaehines in a given time, and, at the same time,

the work is better done, and no possible chance to spoil any of the hoops in cutting the locks.

Having thus described my invention,

That I desire to claim, and secure by Letters Iatent is- 1. The foot-treadle Ill and bent lever E, in cornbination with the two frames asliding in hcad-blocks B and B', and having the revolving cutters e and e and f and ff, constructed and operating substantially as described.

2. The transversely adjustable head-block B, havingthe revolving cutters c and f in a frame slidingr in curved slots, in combination with 'thev laterally-adjustable table 0, constructed in the manner described.

3. The longitudinally-adj ustable'table G', havin g the transversely-adjustable part c e", in combination with the longitudinally-adjustable head-stock B', having the revolving cutters e and f in a frame sliding in curved slots therein, in the manner described.

Witnesses Y EDM. F. BROWN, NEWTON CRAWFORD. 

